/Engine/Source/Runtime/PacketHandlers/PacketHandler/Public/PacketHandler.h
Use this for more complex changes to packets, such as compression/encryption, but be aware that compatibility problems with otherHandlerComponent's are more likely.
Returns Success/Failure
EIncomingResult Incoming ( [FReceivedPacketView](API\Runtime\NetCommon\Net\Common\Packets\FReceivedPacketView) & PacketView )